Blade grinding and sharpening machine.



'L. J. ODELL.

BLADE GRINDING AND SHARPENING MACHINE.

ABPLIOATION FILED DEG. 18, .1912.

Patented Sept. 22, 1914,

3 SHEBTS SHEET 1.

L. J. ODBLLI BLADE GRINDING AND SHARPENING MACHINE. APPLICATION FILED DEC. 18, 1012.

1, l 1 1,315. a nted Sept. 22, 1914.

' 3 SHEETS-SHEET 2.

L. I! ODELL. BLADE GRINDING AND SHARPENING MACHINE.

Arruonlon 51mm DEC. 18, 1912,

1 3 1 5 Eatented Sept. 22, 1914.

wme/w w, 5mm

' 4 is a section on the line 4- -4 of Fig. 3 'viewed in the direction indicated by the arthreaded socket.

miners tween a pair of abrading, rollers so that the and showing theblade holder with a conidiili' ilD LEVI J. GBEiZ-Lf or os a no? rm my" ill Ji pair 3 ANGELES, CAELEEOREIIEL.

' Application filed December18, 1912. Serial 130,

To all *w/wm it may concern ii}: it known that if, Lnvl 3. Oman, a ('itisen oi the United fdtatcs, residing at Los} in the county of Los Angeles and i California, have invented new and moments in Bl-rule Grinding and l '1. specificatimi. invention relates to improvements in mrciiines for grinding and sharpening blades adapted for various purposes, as safety razor blades, and the principal obect to provide a machine that will auto iuatically grind and sharpen the blades in one continuous operation.

It is also an object to provide means to grasp the blade and support the latter he'- blade is effectively on both of its faces.

It is a further object to provide a grind ing and sharpening machine in which the blade is oscillated. between a pair of rollers having a'bradingsurfaces formed of suc-. cessive sections, whereby the blade reciprocated transversely to these abrading sections is successively ground, sharpened and honed. In the drawings accompanying this specification and forming therewith the application for Letters-Patent: Figure 1 isa side elevation of the complete machine "iewed from the blade supporting side. Fig. 2 shows a section through the tabletop longitudinally showing the abrading rolls in elevation viewed from the same side as in Fig. 1. Fig. is a plan View of the machine showing the blade'holder in position.

ground and sharpened.

tained blade in contact with the portion of the roll having the grinding surface. Fig.

rows, the bottom portion of the machine being shown in end elevation. Fig. 5 is'a plan view on an enlarged scale of the blade holder, holding a blade used in the looms of carpet manufacturers. Fig.1? is a side elevation of the holder, also on an enlarged scale 1 viewed from the side showing the blade setting gage. Fig. 7 is an end view of the blade supporting holder showing the Specification of Letters Patent.

5 semirely bra in the drawings numerals are ns'ed to in-- dicate the component parts in the different views. ll) designating the table top. preferaldy oi cast metal and supported on the i nd ran-res 1i, cgs having the ternicdiate of re t, together support in rtahlc and its port on an nil This hrac port tor the ed on the sun shafts are preferably verticaliy disposed and in the same vertical plane. one shaft being placed innnediately above the other. The upper shaft 22, preferably ion er than the lower shaft and, its end oppo" ly dis 2O zmsecured. extends outu'a the shaft iii-and is prov' ied a 1th the pail! o 2% which occupies such aposition. ti .o a

belt carried over this policy wi d not interfere with the pulley 26 mounted on the end of the shaft 33 in the same relative p-r sition, or-the belt 27 carried thereb To 35 properly lubricate these bearings a spindle 28 is secured on the frame extending out Wardly therefrom. and oppositely disposed from the blade supporting brackets, on the outer end oi which is secured the greasecup 29 provided with a plurality of connecting pipes 30, which extend to the four bearing sections or bushings for the two shafts 22 and 2.3. This grease-cup is preferably provided with a threaded cap by which pressure is applied 'toforce the grease through these pipes and their unions 31 to the bearing surfaces in the frame 17. p

The alju'ading rolls are preferably built up of a number of sections usually and preferably annular in form mounted upon the free ends of the shafts and 23, the various sections 127, 128, and 129 being held se-- curely in position by means of the washer 130, and clani .)ed in position by means of the nut 131 which is secured to the threaded end 32 of the shaft. Au annular flange 53 is formed on the shafts for taking up and i fil'lllli'lg a thrust tm the action of the nut 131.

The blade supporting and moving moi-hunisnl is pre'l'cral l, v slu'ip l'l'cd on two indi I stud.

necti'on 57.

vidual frames or standards 34 and 35, each of which is provided with suitable flanged base secured by bolts 36 to the table so that the shaft mounted therein is parallel to and mounted the short shaft 41, a suitable greasecup 42 being provided by which this hearing is lubricated. On the end of this shaft adjacent the pulleys for the abrading rolls the pulley 43 is secured by means of a suitable screw 44, and is also adapted to carry a belt 45. The inner end of the sh {Ifhl-l is provided with a disk-plate 46 slotted transversely and diametrically at -17 to accommodate the slide 48 mounted therein, provided. with a stud 49 extending outwardly parallel with the shaft and having the sleeve 50 mounted thereon and secured in position by means of the nut 51 on the outer threaded end. oft-he This sleeve 50 is provided with a short stud or red 52 which is also threaded on its outer and reduced end passing through a bore in an annular plate 53 forming one end of the connecting box 5%. A nut secured to the threaded end locks the stud in this box and allows the same to be swivcled thereon, the opposite annular plate of the box having a centrally disposed threaded bore in which is threaded the pitman con- This pitman provided with an eye at its opposite end by which it is pivotally connected in the lugs 58projecting from the oscillating sleeve i'i9-which sleeve is pivotally mounted on the shaft 38.

The oscillating sleeve 59 is provided with bearings at its oppositely disposed ends 60, which abut against the inner faces of the bmrings 37 on the two standards 34 and 35 so that no lateral movement is iiossiblc. This sleeve is cut away on the oppositely dis-' posed side from that hearing th lugs 58 and secured thereto a longitudinally slotted block '31 forming a guideway, the inner ver tical. face of which in contact with the semi circular portion of the sleeve is preferably in a plane to one side of the vertical axial plane of the shaft, this guidewa) being se-' cured to the sleeve in any well known manner and cxtemling approximately the full length of the slccve. with the cxce 'ition of the bearings. The upper face of the sleeve intermediate of the bearings and the cut away portion is flattened to form a bearing l surface for the op 'msil'cly (lispo cll slotted block 62 forming a gnideuvayn which isprovided with a web, which engages on the flattened surface previously mentioned and provides the opposite or upper guide for the block 63 secured to the inner end of the blade holder 64., the interval between the re spective flanges on the two guide blocks 61 and 62 being such as to include the thickness of the blade holder 64:.

The upper block 62 of the guide-way is of less length than its oppositely disposed and cooperating guide-block 61, forming an interval at either end into which the block 63 can be introduced or removed, this block having a section formed with a semi-circular recess 65, a portion of this being threaded at 66 to agree with the threads 67 cut on the shaft 38, this thread being preferably extended a slight distance beyond either end of the guide block 62. The outer end of the shaft 38 carried through the bean ing in the standard 35 is provided with a pulley 68, which is in line with the pulley ($9 on. the intermediate driving shaft 70. The blade holder (34 is shown asa flat toned rectangular structure projecting outwurdly and oppositely from the face of the block (33 opposite the recessed semi-circular face having the threads cutthereon, the construction being such that the block can slide within the guide-way and be supported therein.

The blade holding portion 64- is provided with a groove extending inwardly from its outer edge into which the two clamping jaws 71 and 72 are secured by means of the screw or pin 73. A wing bolt 74 is carried through a bore in the upper clamp arm 71 and engages a threaded bore in the lower blade clamping jaw 72, by which ablade as 75 may be clamped between the jaws sccurely and accurately.

To provide for the accurate adjustment of the blade or blank 75. of the pile cutting type shown, the upper plate is cut away at the point 7 6 and a finger 77 formed on the extreme edge of the clamping jaw which extends over the blank as shown in Fig, 5.

Mountcdon the edge of the clamping jaws. opposite the edge having the cut-away portion. is a gage plate 78 slidably mounted in a guide-way 79 secured to the lower clamp: ing jaw 72. The guide-way 79 is provided with a. slot through which the operating handle 80 projects, a spring 81 being provided and connected to the inner end of the gage and secured to the block 63 in a suitable manner so that the gage is normally held to the inner limit allowed the handle by the slot in the guide-way. The function of the gage 78 to facilitate the proper posi-- tioning of the blade 75 between the clamp ing jaws 71 and 72, the gage being pushed outward to its limit, as indicated in dotted lines in Fig. 5, to form a stop against which I one edge of the blade is fitted when adjusting it between the clamping jaws. When the blade 75 is properly positioned the gage minsis per face of the blade holder by which latter is handled and inserted in position removed from the guide-way after the cor pletion of the grinding and sharpening of the blanlr.

l s previously stated, the device is pref erebly driven y on electric motor 15, its pulley 16 carrying a suitable belt which is carried over the pulley 82 mounted on the shaft 83, whose bearings rest upon the cross arm 19;, this shaft being parallel with and oppositely disposed to the shaft also mounted on the cross arm 1! in suitable bearings. From the pulley 8% securely mounted on the shaft 83 a belt 85 is carried over the large pulley 86 mounted on the shaft 70 adjoining which pulley is the smaller pulley 8? over which is carried the belt 45 connecting with the pulley 47-3 on the shaft 41 by which a rocking action is given to the blank carried in the blade holder. The direction of the various shafts and rolls, to gether with their belts is indicated by the arrows, the belt 45 being crossed as is also the belt connecting the pulley 69 mounted on the sheft 70 to the pulley on the threaded shaft A suit-able double grooved pulley 883's mounted on the shaft 83 in line with the pulleys 2d and to carry the bolts 25 and 27, respectively, the belt being crossed so that the nbrading roll 20 mounted thereon is revolved in a re verse direction to the roll 21, so that the :ibruding surfaces are passed by the edge of the blank to form the blade and not against the edge to be ground and sharpened.

In the operation. the devlc the blank is clzunped in the clamping jaws as previously described, while the blade holder and its block are removed from in contact with the guide-ways or the driving screw threads, and the block is brought into position at the point 90 and dropped into the groove in the lower guide-way 61. The shaft-BS'being in motion and revolving toward the operator, or away froin the grinding rolls the first thread engages with the threads cut in the semicircular recess in the block 63 and propels the block to the left as indicated by the arrows until it reaches the point 92 Where the block is only in engagement with the lower guide-way and the engagement with the screw thread has been lost on the shaft 38. the block und clumping jaws attached thereto remaining at rest until such time as it is removed. While traveling along this path the sleeve is coincidently rocked or os cilluted to throw the blade in contact with v v the successive surfaces of the uluurlmg rolls 1 Worm-shaft to advance the block, and means connecting first, with the coarser grinding section 127, next in succeseion the finer sur- "face of the section 128, end finally the hone surface 129 on the extreme free ends of she ebreding rolls.

Suitable openings are provided in the table top lO, through which the belts are ried and to receive the bolts securing the flanged bearing standards to the table, the table top being preferably provided with a, downwardly extending flanged edge to add stillness to the structure. As is well under-- stood by the use of suitable blade holder type of wafer blades as razor blades can be ground and-sharpened in this machine.

1. ln a machine for grinding and sharpening fiat blades, a pair spaced parallel ebrading rolls, means for rotating said rolls in unison in opposite directions, a Worm-shell.

arranged parallel with said rolls, a slotted sleeve rockebly mounted on said short, longtudinel guide-Ways on said sleeve, e bloclr adapted to be inserted through the slot in the sleeve and engaged with the Worm-shaft having an extension projecting through the guide-Way, blade clamping jaws on said extension,'and means for simultaneously ro' tating the Worm-shaftend rocking the sleeve thereon, whereby a, bladercarried by the clamping jaws will be caused to oscillate tween the obi-aiding rolls and at time be advanced from one end of to the other.

In a blade grinding and slit machine, a worm shaft, a sleeve re n'iounted thereon havinge longitud a block having a threaded semi-cyli face adopted to be engaged by the we shaft, means on said block for cer blades to be sharpened, means for gun ug said block longitudinally of the sleeve, and means for rotating the shaft and rocking the sleeve sinuiltaneously, whereby the bloel-i will be advanced by the Worm-shaft to give the blade-carrier a combined oscillating and reciprocating movement.

8. In a blade sharpening and grinding machine, a shaft having Worm threads throughout a portion of its length, a sleeve rockably mounted on said shaft formed with a longitudinal guide slot and having periphoral extending openings adjacent its ends opposite the unthreaded portions of the shaft, a movable block formed With a semicylindrical threaded face and having a projection adapted to be slidably cn aged with the guide slot in the sleeve, bla ererrying means on said projection, said block u lupted to bein engagement with the threw" ed shaft through one of the openings in the sleeve and removed from the other opening in the sleeve after being advanced by the worm-shaft. means for rotating saidn". no

for rocking the sleeve, whereby the blade .carrying means will be given an oscillating movementwhile it is being advanced with the block. I i

4. In a blade grinding andsharpening machine having a pair oi. spaced parallel abrading rolls, a blade holder, a block on which said blade holder is mounted, a wormshafli, means on said block for detachably connecting it to said Worm-shaft, an oscillating member having a guide for slidahly engaging sald block, means for rotating the Wormshaft to advance the block, and means for actuating said oscillating member, where-- by the block will be given a rocking movement in conjunction with its advancing movement to move a blade on the blade carrying means in and out of contact with the abrading rolls while the blade is being advanced longitudinally thereof.

5. In a machine for sharpening and grinding fiat blades, a pair of spaced parallel cy lindrical abrading rolls, a wornrshaft ar-i ranged parallel to said. rolls, a block adapted to be advanced by the latter in one direction, blade-clamping jaws carried by said block arranged to dispose a blade intermediate the abrasive rolls, and means for supporting and guiding said block adapted to be rocked to move the blade longitudinally in and out of contact with the abrading rolls While said block is being advanced by the worm-shaft.

6. In a machine for grinding and sharpening flat blades having a pair of parallel rolls formed with difierent grades of abrasive surfaces thereon, a'Worm-shaft arranged parallel with said rolls, a block formed with a day of December, 1912.

semi-cylindrical channel having Worm teeth to engage the Worm-shaft, blade-clamping jaws on said block, means for detachably holding the block in engagement with the worm-shaft and guiding it. thereon adapted to be rocked tooscillate the block, means for rotating the Worm-shaft to advance the block to move the blade successively from one grade of abra ding surfaces onthe roll to the other grades, and means for oscillating the block holding and guiding means, whereby the blade Will be moved in and out of contact. with the abrading surfaces to grind its opposite sides at one edge. v

7. In a sharpening and grinding machine having a pair of spaced cylindricalv abrading rolls, a portable block, blade holding means on said block, a Worm-shaft paralleling the abrading rolls, means for detachably engaging the block with said worm-shaft, whereby rotation of the latter will advance the block in one direction to move a blade in the blade holder longitudinally of the rolls, means whereby the block may be fed to the Wormshaft and engaged thereby at the beginning of its stroke and automatically disengaged therefrom at the end of its stroke, and means for os illating the block to move the blade in and out of contact with the abrading rolls during its advancement. v In Witness that I claim the foregoing I have hereunto subscribedmy name this 12th 7 LEVI J. ODELL. Witnesses:

W. P. KEENE, M. BATTEY. 

